title: 2-(Pyridin-4-yl)-1H-benzimidazole.
abstract: The title compound, C12H9N3, is an unhydrated analogue of the previously reported trihydrate. The mol-ecule is essentially planar, with a 3.62 (11)° angle between the pyridine and benzimidazole planes. In the crystal, N-H⋯N hydrogen bonds result in chains of mol-ecules parallel to [010], which are additionally linked by weak π-π stacking inter-actions [centroid-centroid distance = 3.7469 (17) Å], resulting in extended sheets of molecules parallel to (103).
authors.affiliation: Department of Chemistry, State University of New York-College at Geneseo, 1 College Circle, Geneseo, NY 14454, USA.
authors.forename: David K
authors.initials: DK
authors.lastname: Geiger
authors.forename: Christopher J
authors.initials: CJ
authors.lastname: Bond